【摘要】 在应用符拉索夫理论分析钢轨约束扭转正应力时 ,引入了法向截面内无剪应变的假定 ,考虑了壁厚因素对约束扭转正应力的影响 ,分析所得的结果比较符合实际情况。更多还原

【Abstract】 Vlasov’s theory is broadly used for analyzing the normal stress in constrained torsion for the rods with thin-walled sections. If the thin-walled section of the rod has a medium thickness, results from the Vlasov’s theory usually include some errors. This paper anlayzes the normal stress for constrained torsion for rails with the assumption of non-shear-strain in normal section and the consideration of thickness effect. Results from our theory appear reasonable due to the phenomena of rails damage.更多还原